Тёмный
No video :(

Conductors, insulators, and semiconductors | Class 12 (India) | Physics | Khan Academy 

Khan Academy India - English
Подписаться 447 тыс.
Просмотров 124 тыс.
50% 1

In this video, we will use the band theory to figure out what makes certain things behave like conductors, insulators, and semiconductors.
Learn the next topic here --www.khanacadem...
Class 12 Semiconductors: We cannot imagine our life without computers today. But what makes a computer tick? What's making this technology grow at such an exponential rate? It's all due to semiconductors. As unbelievable as that might sound, altering the properties of semiconductors allows us to build these computers. In this topic, we will explore the world of semiconductors. It's a journey from what semiconductors are all the way to creating building blocks of these computers.
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!
Created by Mahesh Shenoy

Опубликовано:

 

27 авг 2024

Поделиться:

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист
Посмотреть позже
Комментарии : 89   
@creativegaming6747
@creativegaming6747 4 месяца назад
00:01 Understanding electrical properties through energy band structure 01:02 Conductors have overlapping energy bands, creating a single giant energy band. 02:03 Conductors have free-moving electrons due to energy continuum 03:01 Band gap determines insulator behavior 04:06 Insulators have forbidden energy levels that make it difficult for electrons to get excited. 05:09 Semiconductors have an extremely tiny band gap, leading to higher electron excitation at room temperature. 06:10 Semiconductors have a small band gap, allowing some electrons to become free. 07:08 Conduction bands and valency bands explained
@osamazahid715
@osamazahid715 6 лет назад
I am gonna download the whole playlist, its a great source of learning!
@ukashk1071
@ukashk1071 2 года назад
I am downloading as I'm watching
@AFCOE
@AFCOE 7 месяцев назад
​@@ukashk1071same here in Africa 🌍😂😂😂😂
@mathsteacher2254
@mathsteacher2254 Год назад
I'm a physics teacher and I really love your teaching style and I also use your technique I'm my teaching.
@anchalhole7028
@anchalhole7028 3 года назад
These videos have made learning so much fun!!!... A great way of teaching...Can we have more videos for the 12th standard courses? it'll be really appreciable.
@Vedicaa
@Vedicaa 2 года назад
Thank you sir. The eloquence of your speech, the animation, your enthusiasm and overall your method of teaching is amazing. Thank you for helping us!
@kolibri5861
@kolibri5861 4 года назад
like you saved my life my professor don't explain anything at all like we know all this before when i was born
@phenomenalphysics3548
@phenomenalphysics3548 4 года назад
lol samee
@kaushalfrancisj
@kaushalfrancisj 4 года назад
Thank you Khan Academy ❤️❤️😊 For teaching in English 👏👏😁
@varunkharayat4251
@varunkharayat4251 5 лет назад
Great teaching skills
@LT.Hemantchahar
@LT.Hemantchahar Год назад
Guys I am student of pw but from this platform i understand a lot in simple ways. ❤️❤️
@LightYagami-lf7go
@LightYagami-lf7go 2 года назад
No ad is like a blessing ♥️
@anshik.k.t
@anshik.k.t 2 года назад
how can conduction band and the valence bands overlap? doesn't it violate pauli's principle ... and how does this conduction band helps electron to hop around from from one atom to atom?
@sridharchitta7321
@sridharchitta7321 2 года назад
Electrostatics and circuits belong to one science not two. For a unified approach to learning Current and the process of conduction watch these two videos i. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-REsWdd76qxc.html and ii. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-8BQM_xw2Rfo.html Also, in the textbooks referred in the last frame of video i you will find descriptions of the operation of resistors, capacitors and inductors using this approach which makes it easier to understand. There are also chapters in the textbook references which explain the operation of diodes and transistors using the unified approach.
@virtualgirl1162
@virtualgirl1162 4 года назад
Excellent teaching skills
@Ayana781
@Ayana781 4 года назад
Yeah
@Hermioneswand1
@Hermioneswand1 5 лет назад
This is amazing! Very easy to understand :)
@elvisbwalya6057
@elvisbwalya6057 9 месяцев назад
Which software do u use to make videos otherwise it's lit and awesome 🎉
@riturajborah382
@riturajborah382 5 лет назад
Is it necessary to state 0 Kelvin while defining the valence band? It is confusing because valence band has it's definite energy, The temperature is the indicative of the energy of the electrons. At 298 K (room temperature), the energy of the valence band will not change, but the electrons will attain energy to jump to the conduction band.
@Extraordinary10s
@Extraordinary10s 4 года назад
Rituraj Borah What I *think* could be an answer to your question is that when temperature isn’t 0 Kelvin then some of the electrons in the valance band acquires thermal energy (equivalent to kT where k is the Boltzmann constant and T in temperature in kelvin) and leaves the valance band in order to go to conduction band. Now as the valance band isn’t fully filled (an electron just went to conduction band), it technically shouldn’t be called as a valance band as valance band is defined to be the highest energy band that’s *filled*. When defining valance band, we shouldn’t let electrons acquire any energy from external sources and this is possible at 0 K.
@vega21985
@vega21985 2 года назад
@@Extraordinary10s I think you are right!
@fatimazahid1402
@fatimazahid1402 3 года назад
LOVE THIS,BRIEF AND COMPREHENSIVE!!!!!!!!!!!!!!
@MrShanks008
@MrShanks008 6 месяцев назад
wow, wish we had teachers like this in school.
@shivensaini3643
@shivensaini3643 2 года назад
I also used to get confused why band theory of semiconductors is only valid for solids not for Gases.
@niushataji
@niushataji 3 месяца назад
Why is the highest energy band (yellow line) at the same height/amount for all materials?
@_srashtigupta_
@_srashtigupta_ 2 года назад
Sir, could u tell which shells come in the conduction band?.... I'm thinking as a series of valence shells form the valence band (3s shells of Na solid) then a series of higher unfilled shells form the conduction band (like 3p, 4s shells in Na solid)...plz do crt if I'm wrong.
@sayanimajumder9181
@sayanimajumder9181 2 года назад
Best video for this topic till now and as well as the video for the band theory is the best explanation till now for me
@radalaksmianandhkumar8179
@radalaksmianandhkumar8179 3 года назад
Hmmm...amazzzzzzzzzing explanation!!!!!
@AlEX95RbT
@AlEX95RbT 5 лет назад
Absolutely great, thank you.
@Thanos-hp1mw
@Thanos-hp1mw 2 года назад
Amazing. Thank you sir.
@anish_3.141
@anish_3.141 2 года назад
Thank you so much for this . Wonderful teaching . I had a doubt though about why the semiconductors have fully filled valence band?
@zizou357
@zizou357 5 лет назад
these energy bands you are talking about. Can you describe them as "electron shells" ? ---> Directly translated from swedish ;) ... My teachers in chemistry have always talked about these shells where you have a fixed amount of electrons in each and every one of them. And I believe the numbers of electrons are 2-8-8-2 from the inner shell to the outer one. Just a side note. If I´m correct, then a typical insulator would have completely filled electron shells i.e "locked electrons".
@KhanAcademyIndiaEnglish
@KhanAcademyIndiaEnglish 5 лет назад
No. What you are referring to are discrete energy levels of a single atom system. (These are the shells). However when multiple atoms come close to each other, these discrete energy levels convert to energy bands. The video is try to explain what these bands are. So they cannot be thought of as energy shells. (That is only applicable for isolated atoms)
@RSKEDITS
@RSKEDITS 4 года назад
I got the same doubt as my book have no reference like this is these same thing you studied in molecular orbital theory im chemistry. If u Still cant understand : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3npADYVtQOM.html
@nidhipatil9537
@nidhipatil9537 10 месяцев назад
Is playlist enough for jee
@thambirajahjegatheesan2425
@thambirajahjegatheesan2425 3 года назад
Nice teaching..... thanks a lot
@ytrew9717
@ytrew9717 4 года назад
ok but but where is the forbidden gap at 2:28? I'm lost: following your logic, I don't see why at 3:50 the electrons could not move freely ("as student in a classroom") until the blue line. What did I missed?
@ytrew9717
@ytrew9717 4 года назад
Ok I got (only a part of) it, I missed 1:20 : the first and second energy bands are overlapping. Feedback: I would not have removed them from you animation, it's harder to understand without it. But even with it, the drawing would have remain confusing since there is no difference between the way you draw the conductor and the insulator: the next blue line/energy band is missing on the insulator drawing right? Edit I finally got it: *the yellow bar show the first band, the blue one the second*. There is a huge gap btw them on insulator, so they can't jump (I watched it too quickly, sorry).
@KhanAcademyIndiaEnglish
@KhanAcademyIndiaEnglish 4 года назад
@@ytrew9717 Thanks for the feedback, I am guessing you resolved your own doubt. Feel free to reply if you have more specific question :)
@srikutty7150
@srikutty7150 2 года назад
Good content.. Appreciable.
@MohymenulIslam
@MohymenulIslam 4 года назад
Great way to teach, Loved it!!
@devdharsshan
@devdharsshan 6 месяцев назад
3:39 it's 6 eV
@craftmela3090
@craftmela3090 4 года назад
Sir can u tell how to get all your videos of PCM
@runzit2007
@runzit2007 5 лет назад
Awesome
@fehmi35
@fehmi35 4 года назад
What happens If valance shell of insulators and semiconductors is not completely filled with electrons ?
@muhammadsalmanmajid8828
@muhammadsalmanmajid8828 2 года назад
Great explanation
@38RiteekaSehrawat
@38RiteekaSehrawat 2 года назад
Very very usefull
@craftmela3090
@craftmela3090 4 года назад
U r 👍✌👌👌👏
@rawda5854
@rawda5854 3 года назад
Fantastic 🤩🤩💥
@ananyasingh3433
@ananyasingh3433 Год назад
Why is the valence band completely filled in insulators and semiconductors?
@srisatya1311
@srisatya1311 4 года назад
What is Fermi level
@themarvellous
@themarvellous 8 месяцев назад
Why electron need to have different energy level??? I never understand the language of google, book and teacher, I can only understand your explanation
@RSKEDITS
@RSKEDITS 4 года назад
Quality content!
@deveshsuthar6177
@deveshsuthar6177 3 года назад
Sir, diamond and graphite are compressed form of carbon Then why they show different nature One is insulator and one is condutor
@rakshatpratapsingh6404
@rakshatpratapsingh6404 3 года назад
because gravity has a tetrahedral geometry with one unpair electron .... which forms layers called Graphene (having a sheet of unpaired electrons above them ... making them conductors of electricity when potential is applied along the plane) such layers of graphene stack to form graphite and are the reason for its conductive nature whereas diamond is made of a network of carbon atoms and has no free electron, making it an insulator
@saharanpurlive4625
@saharanpurlive4625 4 года назад
Sir ,In insulators there is a huge forbidden band however, charges get induced in it ,why???
@DDD-we1em
@DDD-we1em 4 месяца назад
I love you!!!!!
@twotwo66
@twotwo66 5 лет назад
Thank you!!!!
@sairamsaikumar1152
@sairamsaikumar1152 4 года назад
What is the cnduction band called as at 0K? Does it exist at all?
@dr.himangimahajan8950
@dr.himangimahajan8950 Год назад
Insulator.
@sanuratennakoon7979
@sanuratennakoon7979 11 месяцев назад
Thanks
@DDDelgado
@DDDelgado 4 года назад
You got my sub, great explanations, simple and easy to follow
@13julietririssukmahadi68
@13julietririssukmahadi68 2 года назад
Why insulator have a gap and conductor is not? It is because the energy level that use is 2 8 8?
@chs_dhanu
@chs_dhanu 4 года назад
The way you teach inspires me
@vigneshvicky6720
@vigneshvicky6720 3 года назад
Bro where conduction band comes frm
@jenifersharon5708
@jenifersharon5708 5 лет назад
are these videos helpful for neet???????
@mdsalahuddin1911
@mdsalahuddin1911 5 лет назад
Me thinking same?
@devaanarayanannv8829
@devaanarayanannv8829 4 года назад
Damn right
@furiousarpan7473
@furiousarpan7473 Год назад
When concepts become clear it's helpful for any exam you face
@phenomenalphysics3548
@phenomenalphysics3548 4 года назад
1:38 you mean hybridization?
@shauryaverma2705
@shauryaverma2705 Год назад
❤️
@srisatya1311
@srisatya1311 4 года назад
We can't see an atom, but how do we know all these how can we see them in practical
@phenomenalphysics3548
@phenomenalphysics3548 4 года назад
its all mathematics and prediction of quantum mechanics plus the experimental results
@vishank7
@vishank7 3 года назад
There's a 3 ep series called "The Mystery of Matter". It explains how these fundamental things were discovered very beautifully! You can find it on RU-vid as well😄
@shilpimitra5342
@shilpimitra5342 6 лет назад
First to like
@aymfrankieLFC
@aymfrankieLFC 3 года назад
thanks❤😭
@intheshell35ify
@intheshell35ify 3 года назад
Word?!?
@JohnDoe-hl2qm
@JohnDoe-hl2qm 6 месяцев назад
OK
@chiranjibimahapatra708
@chiranjibimahapatra708 3 года назад
681
@miii.ah_
@miii.ah_ 4 месяца назад
fun
@iffatzahra3624
@iffatzahra3624 3 года назад
No deep explanation
@oldbot64
@oldbot64 9 месяцев назад
Use text book
@chandrashekharsingh4821
@chandrashekharsingh4821 2 года назад
Honestly Speaking everything is fine except the voice for me .
@user-ge5gm9fr2m
@user-ge5gm9fr2m 8 месяцев назад
He wrote bank😂
@_4kcm
@_4kcm Год назад
OK😂
@sayansecular8604
@sayansecular8604 3 года назад
I can't believe this is in class 12
@seyedolshohada
@seyedolshohada 3 года назад
why this guy desperately tries to imitate Sal Khan . It doesn't work with such an accent
@AmandeepSingh-bj9dm
@AmandeepSingh-bj9dm 2 года назад
how can someone sound so annoying
Далее
СМАЗАЛ ДВЕРЬ
00:31
Просмотров 263 тыс.
How Wrong Is VERITASIUM? A Lamp and Power Line Story
19:17
Knocking Electrons With Light-The Photoelectric Effect
10:40
Conductors and Insulators | Physics | Khan Academy
13:33
Band theory (semiconductors) explained
11:42
Просмотров 313 тыс.
The Big Misconception About Electricity
14:48
Просмотров 22 млн